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cloud seeding

any technique of adding material to a cloud to alter its natural development, usually to increase or obtain precipitation.
Origin of cloud seeding
First recorded in 1945-50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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cloud seeding in Science
cloud seeding  
A method of making a cloud give up its moisture as rain, especially by releasing particles of dry ice or silver iodide into cold clouds. Dry ice freezes water droplets in the cloud, turning them into nuclei for the formation of raindrops. Silver iodide particles are used because they have a crystal structure similar to ice and can also serve as nuclei for raindrop formation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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cloud seeding in Culture

cloud seeding definition

A technique for producing rain by dropping chemicals or small objects into clouds.

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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